Cheap Flight Tickets from Washington (DCA) to Ontario (ONT), Starting at $338

Good to Know: Cheapest and Fastest DCA - ONT Flights

Useful information for finding best airline tickets from Ronald Reagan Washington National to Ontario International on your next trip.

Cheapest Round Trip Flight

$338

WN Southwest Airlines • 1 stop • 11h 45m

Jul 12 – Jul 19

The cheapest round trip flight from Washington to Ontario (DCA-ONT-DCA) is currently $338

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Fastest Flight

11h 45m

The fastest nonstop flight from Washington to Ontario (DCA-ONT) takes 11h 45m

Top Airlines Flying from Washington to Ontario

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

Latest Flight Deals from Washington (DCA) to Ontario (ONT)

Compare and book low fare round-trip air tickets from Washington to Ontario. Ideal for travelers with confirmed return itineraries.

Jul 12 - Jul 19, Economy
WN
Washington → Ontario
11h 45m
2:10 PM - 6:15 PM • 1 stop
WN
Washington → Ontario
13h 35m
12:30 PM - 11:45 PM • 1 stop
$338
Southwest Airlines
Jul 12 - Jul 19, Economy
WN
Washington → Ontario
18h 30m
11:50 AM - 8:00 PM • 1 stop
WN
Washington → Ontario
10h 20m
1:35 PM - 10:55 PM • 1 stop
$338
Southwest Airlines
Jul 12 - Jul 19, Economy
WN
Washington → Ontario
11h 45m
11:50 AM - 3:55 PM • 1 stop
WN
Washington → Ontario
10h 50m
6:00 AM - 3:50 PM • 1 stop
$338
Southwest Airlines
Jul 12 - Jul 19, Economy
DL
Washington → Ontario
14h 9m
5:59 PM - 11:48 PM • 1 stop
DL
Washington → Ontario
8h 21m
8:00 AM - 4:01 PM • nonstop
$374
Delta Airlines
Jul 12 - Jul 19, Economy
DL
Washington → Ontario
12h 17m
1:45 PM - 6:22 PM • 1 stop
DL
Washington → Ontario
11h 52m
10:59 PM - 9:11 AM • 1 stop
$400
Delta Airlines
Jul 12 - Jul 19, Economy
DL
Washington → Ontario
12h 7m
7:00 AM - 11:27 AM • 1 stop
DL
Washington → Ontario
11h 55m
12:00 PM - 10:15 PM • 1 stop
$400
Delta Airlines

Fly from Washington to Ontario with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Washington to Ontario? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Washington to Ontario Flights

What are the airports in Washington?
IAD,BWI,DCA
What’s the most popular airline flying from DCA to ONT?
The most popular airline flying from Washington to Ontario are
Can I fly from DCA to ONT non-stop?
NO
Which airlines fly nonstop between Washington and Ontario?
The non-stop flights between Washington and Ontario are .
What’s the earliest departure time from DCA to ONT Airport?
The earliest flight leaves DCA at 7:00 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my Washington to Ontario flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from DCA to ONT?
Read the fare rules of the Washington to Ontario air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Washington and Ontario?
operate flights between Washington and Ontario
How long does a flight from Washington to Ontario take?
It takes approximately 5 hour to fly non-stop from DCA to ONT, which is 2264.8 miles by air.
Which airlines provide the cheapest flights from Washington (DCA) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from DCA were found on WN : USD 338
Do I need a passport to fly between DCA and ONT?
No
What’s the latest departure time from DCA to ONT ?
The last flight leaves DCA at 5:59 pm

Essential Information for Booking Flights from Washington (DCA) - AI Insights

What's the cheapest airline from dca to ont?
You can find the cheapest flights from Ronald Reagan Washington National Airport (DCA) to Ontario International Airport (ONT) with a First-class ticket on Southwest Airlines (WN). For a one-way trip with 3 passengers, booking at least 23 days in advance can help you secure the best Low Fares. You can search for Budget-friendly flights on the fareleaders.com website for the most up-to-date airfares and Savings.
What's the popular airline to fly from dca to ont?
Southwest Airlines offers convenient flights from Ronald Reagan Washington National Airport (DCA) to Ontario International Airport (ONT) with a one-stop layover. As a First Class passenger, you'll enjoy luxury amenities and fine dining. Booking in advance, 23 days prior to your trip, can help secure the best airfares. With Southwest Airlines, you can find affordable airfare options for your one-way trip.
What's the cheapest day of the week to fly from dca to ont?
The cheapest day to fly from Ronald Reagan Washington National Airport (DCA) to Ontario International Airport (ONT) is Thursday. Flying on this day can help you secure a budget-friendly flight. You can find airfares for this route by booking in advance, ideally 23 days prior to your trip. This will increase your chances of getting the best deals on airfares.
What's the cheapest month to fly from dca to ont?
The cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Ontario International Airport (ONT) is November, as it tends to offer lower airfares during this period. Booking in advance, you can secure a budget-friendly flight with your preferred airline. November is a great time to find savings on airfares, making it an ideal month for a low-cost flight.
Which airline/airlines fly from dca to ont?
The airlines that fly from Ronald Reagan Washington National Airport (DCA) to Ontario International Airport (ONT) include Southwest Airlines, American Airlines, Aeromexico, United Airlines, JetBlue Airways, Frontier Airlines, Alaska Airlines, and Delta Airlines. You can find the most up-to-date flight information on fareleaders.com, a leading airfare comparison platform.
What is the cheapest airfare to Ontario from Washington National Airport?
You can find the cheapest airfare to Ontario from Washington National Airport on FareLeaders, with Southwest Airlines offering the best option.
How far in advance should I book my one-way flight?
It is recommended to book your one-way flight at least 23 days in advance to get the best fares.
Can I find affordable flights on your website for a weekend getaway?
Yes, FareLeaders offers affordable flights for weekend getaways, including luxury cabins with suites and fine dining.
What is the agency fee for booking flights through your platform?
There is no agency fee for booking flights through FareLeaders.
How do I search for flights with the best fares on your airline?
You can search for flights with the best fares on Southwest Airlines by using our airfare comparison tool on FareLeaders.
Can I book a luxury cabin with suites and fine dining on your flights?
Yes, you can book a luxury cabin with suites and fine dining on Southwest Airlines flights through FareLeaders.
What is the process for advance booking and seat selection on your flights?
You can advance book and select seats on Southwest Airlines flights by using our booking tool on FareLeaders.

Washington (DCA) to Ontario (ONT): Airport Information

Origin Airport Ronald Reagan Washington National , Washington, US
Destination Airport Ontario International , Ontario, US
Distance 2265 miles

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